172 



MR. J. S. BALT ON SOME GENERA 



three apical ones stained with piceous. Thorax more than one 

 half broader than long ; sides very slightly diverging and sinuate 

 from the base to beyond the middle, thence converging towards 

 the apex, the hinder angles subacute, the anterior ones slightly 

 produced, obtuse ; disk transversely sulcate immediately behind 

 the middle, the sulcation strongly impressed during its whole 

 length. Elytra oblong, dilated posteriorly, convex, distinctly and 

 rather strongly punctured, the puncturing nearly obsolete towards 

 the apex ; the punctures on the anterior half of the inner disk 

 irregularly arranged in double rows. 



The above species was confounded by Jacoby with Buq^uetii, 

 Guer., on w^hich he founded the genus ; although similar in colo- 

 ration to that insect, it is well separated by the structural 

 characters in both sexes. 



4. PSEUDOCOPHORA AMBUSTA, EHchs. NoV. Act. Lcopol. Carol. XV. 



1834, Suppl. i. p. 272. — Oblongo-ovata, postice paullo arapliata, 

 convexa, fulva aut flava, antennis pallida flavis; pectore, abdoinine, 

 pedibus posticis quatuor elytrommque limbo externo nig;ris ; thorace 

 transversim sulcato ; elytris subseriato-punctatis, nigro-limbatis. 

 Long. 2| lin. 



Mas. Elytris infra basin fovea magna, nigra, margine elevata, fundo 



quadridentata, dentibus duobus anticis bifidis ; abdominis segmento 



anali trilobate, lobo intermedio eoncavo. 

 Fern. Abdominis pygidio apice trifido, lobo intermedio elongate 



tuberculo conico instructo ; segmento anali medio coucavo-emar- 



ginato. 



Var. A, . Elytrorura limbo externo nigro obsolete. 



Hah. Type, Luzon {Ericlison) ; var. A, Celebes {Wallace). 



Antennae pale flavous, the third joint twice the length of the 

 second, rather longer than the fourth. Thorax twice as broad as 

 long; sides slightly diverging and rather strongly sinuate from 

 the base to beyond tlie middle, thence obliquely converging to 

 the apex, the anterior angles slightly excurved ; disk trans- 

 versely sulcate, the sulcation interrupted in the middle part of 

 its course. Elytra similar in form to those of P. Buquetii ; 

 their surface less strongly punctured, the subcostate interspaces 

 being absent. The males may be known by the anterior pair of 

 teeth on the subbasal fovea being distinctly bifid, not single as in 

 the other s])ccies of the genus ; the hinder pair are formed as in 

 P. Buquetii. 



